Check out an explanation for Kylo Ren's lightsaber design in Star Wars: The Force Awakens, which is pretty much what everyone thought when we first seen it in the teaser -- that Kylo didn't really have a clue how to construct one.

"Star Wars: The Force Awakens" is directed by J.J. Abrams from a screenplay by Lawrence Kasdan and Abrams. Kathleen Kennedy, J.J. Abrams, and Bryan Burk are producing, and John Williams returns as the composer.